Rufous Casiornis vs Swainson's Flycatcher

In short

Rufous Casiornis and Swainson's Flycatcher can be distinguished by their plumage and vocalizations. Rufous Casiornis is uniformly rufous with a pale bill, while Swainson's Flycatcher has a more varied plumage with a yellow belly and a strong, three-part whistled song. Observing these differences in the field will help in accurate identification.

Identification tips

1. Look for the uniform rufous plumage and pale bill of Rufous Casiornis. 2. Note the yellow belly and three-part whistled song of Swainson's Flycatcher. 3. Consider habitat and elevation, especially if observing potential migratory behavior in Swainson's Flycatcher.

Size

Both species belong to the Tyrant Flycatchers family, but Swainson's Flycatcher typically appears more robust and lanky compared to the more compact Rufous Casiornis.

Plumage

Rufous Casiornis is uniformly rufous with slightly darker wings and paler underparts, while Swainson's Flycatcher has brown upperparts, a pale ashy throat, yellow belly, and pale edging to the wing feathers.

Habitat

Rufous Casiornis and Swainson's Flycatcher both inhabit areas east of the Andes, but Swainson's Flycatcher is found below 1200 meters and may be migratory, potentially affecting seasonal distribution.

Voice

Swainson's Flycatcher is known for its strong, three-part whistled phrase, whereas Rufous Casiornis does not have a distinctive vocalization noted.